How many nuclear power plants are in Arizona?

1, with 4 GW of nameplate capacity between them, spread over 1 county. That is the EIA-860M operating count for 2026-07.

Is there a map of Arizona nuclear power plants?

Yes — the map above. Each dot is one nuclear power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.

Which is the largest nuclear power plant in Arizona?

Palo Verde, at 4 GW. The table is sorted largest first, so the rest follow it.

Is there a nuclear power plant near me in Arizona?

The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.

Which grid operator runs Arizona's nuclear power plants?

No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Arizona is largely a vertically integrated utility rather than an organised market.

How current is this, and what is left out?

EIA-860M for 2026-07. EIA technology "Nuclear" — commercial reactors reporting on EIA-860M. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.

Nuclear Power Plants in Arizona

Every operating nuclear power plant in Arizona on EIA-860M for 2026-07: 1 plants, 3 reactors and 4 GW of nameplate capacity across 1 county.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants: 1; 3 generating units
Nameplate capacity: 4 GW
Counties: 1
Grid operator: Mixed; no single ISO covers a majority

Map of nuclear power plants in Arizona

Every one of the 1 plants is drawn at the coordinate EIA files for it.

Loading map…

Nuclear · 1

List of nuclear power plants in Arizona

Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.

nuclear power plants in Arizona

Palo VerdeNuclear	Arizona Public Service Co	Maricopa	4,209.6	3	1986	Operating

Largest nuclear power plants in Arizona

1Palo VerdeMaricopa County, Arizona4,209.6 MW

Nuclear power plants by county in Arizona

The county EIA files against each plant. It is the fastest way to find the plant nearest a given town.

County	Plants	Nameplate MW
Maricopa	1	4,209.6

Nuclear Power Plants in Arizona: FAQ

How many nuclear power plants are in Arizona?: 1, with 4 GW of nameplate capacity between them, spread over 1 county. That is the EIA-860M operating count for 2026-07.
Is there a map of Arizona nuclear power plants?: Yes — the map above. Each dot is one nuclear power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.
Which is the largest nuclear power plant in Arizona?: Palo Verde, at 4 GW. The table is sorted largest first, so the rest follow it.
Is there a nuclear power plant near me in Arizona?: The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.
Which grid operator runs Arizona's nuclear power plants?: No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Arizona is largely a vertically integrated utility rather than an organised market.
How current is this, and what is left out?: EIA-860M for 2026-07. EIA technology "Nuclear" — commercial reactors reporting on EIA-860M. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.